he said obama's work to fix the economy has ended in failure. >>> romney and obama spent a lot of their time during this campaign arguing about the economy, but they also sold voters on their foreign policy plans. they talked tough on china. however, they didn't flesh out their approach for dealing with the world's second largest economy. nhk world's sue assume my kojima went to find some answers. >> reporter: president barack obama was elected four years ago. he promised a change from his predecessor, george w. bush. he has taken an approach to foreign policy. >> we were able to refocus our attention to not only the terrorist threat, but also beginning a transition process in afghanistan. it also allowed us to refocus on alliances and relationships that had been neglected for a decade. >> reporter: the operation candidate mitt romney said he would take a different approach. he said the u.s. must maintain its own strengths to create stability around the world. >> it is our responsibility and the responsibility of the president to use america's greatest power to shape history. >> reporte